This project will develop SciSkillQuest, a web-based multiplayer game intended to teach middle school students scientific inquiry skills and to foster academic growth mindsets in science. Students will pursue quests, employing inquiry skills to navigate and succeed in the game, including Questioning, Modeling, Investigating, Analyzing, Computing, Explaining, Arguing, and Informing. The game will include different paths to a solution, role playing elements, immersive narratives, challenge-based progressions, and peer collaboration to engage players. The growth mindset message — that ability and skill are developed through effort and learning — will be introduced and reinforced through feedback by embedded in-game characters. The games will be supplemental to the curriculum but will also be designed to be integrated within instructional practice. The game will be available for mobile devices as well as web browsers.